Algebra I Unit 1 Review

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• 121

• 60.5

• 242

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Chris is on a train that is traveling at 86 miles per hour. What is the train's speed in feet per second?

• 172.00

• 126.13

• 146.20

• 108.93

Cathie is making a dress with a sash. The sash needs to be 72.3 inches long, but Cathie's measuring tape is only in centimeters. Which of the following shows the number of centimeters, with the correct number of significant digits, that Cathie needs to measure in order for the sash to be 72.3 inches long? (1 inch = 2.54 centimeters)

• 184

• 28.14

• 28.5

• 183.62

About how many millimeters are in 12.5 feet?

• 38.1 mm

• 381 mm

• 3810 mm

• 3.81 mm

In one day, 52 people take group tennis lessons at Cherry Hills Country Club. The club provides 13 lessons each day. If an average of 64 tennis balls are used in each lesson, determine the average number of tennis balls used per person per lesson (round to the nearest whole number if necessary).

• 1

• 16

• 21

• 5

The momentum, p, of an object is represented by the formula p = mv, where m is the mass of the object and v is the velocity of the object. If p has units of kilograms·meters per second and m has units of kilograms, what must be the units of v?

• meters

• seconds

• meters per second

• meters squared